NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
PS-5
C
D
E
F
H
I
J
K
L
MA
B
PS
Revision: 2006 November2007 350Z
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTINGPFP:00003
NVH Troubleshooting ChartNGS00006
Use chart below to help you find the cause of the symptom. If necessary, repair or replace these parts.
×: ApplicableReference page
PS-6PS-6PS-21PS-21PS-21PS-6PS-7PS-21EM-12PS-7PS-15PS-17PS-10PS-10PS-17
NVH in PR section
NVH in RFD section
NVH in FAX, RAX, FSU, RSU section
NVH in WT section
NVH in WT section
NVH in RAX section
NVH in BR section
Possible cause and suspected parts
Fluid level
Air in hydraulic system
Outer socket ball joint swinging force
Outer socket ball joint sliding torque
Outer socket ball joint end play
Steering fluid leakage
Steering wheel play
Steering gear rack sliding force
Drive belt looseness
Improper steering wheel
Improper installation or looseness of tilt lock lever
Mounting rubber deterioration
Steering column deformation or damage
Improper installation or looseness of steering column
Steering linkage looseness
PROPELLER SHAFT
DIFFERENTIAL
AXLE and SUSPENSION
TIRES
ROAD WHEEL
DRIVE SHAFT
BRAKES
SymptomNoise× × ××××× × × ×××××× ×
Shake××× × ×××× ×
Vibration××××× × ×× ×
Shimmy××× × ××× ×
Judder××××××
PS-8
STEERING WHEEL
Revision: 2006 November2007 350Z
c. While pulling outer socket slowly in ± 11.5 mm (± 0.453 in) range
from neutral position, make sure rack sliding force is within
specification.
d. If rack sliding force is not within specification, overhaul steering
gear assembly.
CHECKING FRONT WHEEL TURNING ANGLE
Check front wheel turning angle after the toe-in inspection.
Place front wheels on turning radius gauges and rear wheels on
stands so that vehicle can be level. Check the maximum inner
and outer wheel turning angles for LH and RH road wheels.
Start engine and run at idle, turn steering wheel all the way right
and left, measure the turning angle.
If it is not within specification, measure rack strokes.
If rack stroke is out of specification, disassemble steering gear
assembly to check rack stroke.
Any turning angles are not adjustable. If any of steering angles
are out of the specification, check if the following parts are wear
or damaged.
–Steering gear
–Steering column
–Front suspension components
If found that they are worn or damaged, replace them with new ones respectively.Rack sliding force: 171 - 234 N
(17.4 - 23.9 kg, 38 - 53 lb)
SST090B
FAA0016D
Inner wheel (Angle: A)Minimum 35° 55' (35.9°)
Nominal 38° 55' (38.9°)
Maximum 39° 55' (39.9°)
Outer wheel (Angle: B) Nominal 30° 40' (30.7°)
SGIA0055E
Rack stroke “L” : 64.5 mm (2.539 in)
SGIA0629J
